Provides enough shelves and legs to create a BP42, BP34 or BP26 Plastic cart. When you need a different height, legs switch easily removing with a simple twist. Our plastic carts are strong, yet lightweight so it's easy to move them from room to room. Models are designed with smaller shelves especially for AV & other utility applications. Each cart features shelves molded from tough, high density polyethylene plastic with a black finish. The legs are designed from black PVC pipe and each cart is complete with 4" casters (two locking). Legs snap easily onto the tapered tube - tapered design helps prevent legs from splitting. The top shelf and handel are formed from a single mold to eliminate the possibility of cracking.